| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna synthesis circuit with low loss at a low cost. SOLUTION: This antenna synthesis circuit is provided with a first Y circulator 14 connected to a first transmission part 10 and a first reception part 12 through a first transmission terminal 1 and a first reception terminal 3, a second Y circulator 15 connected to a second transmission part 11 and a second reception part 13 through a second transmission terminal 7 and a second reception terminal 9, a 4-terminal branch line type hybrid ring 17 connected to the first and second transmission/reception terminals 2 and 8 of the first and second Y circulators 14 and 15 and a third Y circulator 16 connected to two transmission time output terminals A and B of the 4-terminal branch line type hybrid ring 17 through a third transmission terminal 4 and a third reception terminal 6. Since the antenna synthesis circuit is formed on a printed board by the Y circulators and the 4-terminal branch line type hybrid ring, the antenna synthesis circuit with low loss at a low cost is realized.</p> |
